Home / 4,880.64-6,728.93-3,111.60

Finding the Fourth Proportional to 4,880.64, 6,728.93 and 3,111.60

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Solution

The fourth proportional to 4,880.64, 6,728.93 and 3,111.60 is: 4,289.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,880.64 : 6,728.93 = 3,111.60 : x
  2. Step 2: Convert to fraction form
    4,880.64/6,728.93 = 3,111.60/x
  3. Step 3: Cross multiply
    4,880.64x = 6,728.93 × 3,111.60
  4. Step 4: Simplify right side
    4,880.64x = 20,937,723.03
  5. Step 5: Solve for x
    x = 20,937,723.03/4,880.64
  6. Step 6: Final answer
    x = 4,289.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.